LEU Calculator
Large Energy User connection requirements · CRU/2025236 · ≥10 MVA
Data centre MIC
100 MVA — grid connection
76.9 MW IT load (÷1.3 PUE)
BESS share of de-rated capacity
30% BESS de-rated share
70% Gas CCGT de-rated share
Gas + BESS capacity breakdown
Total de-rated required
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MW (must ≥ MIC)
Gas CCGT nameplate
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MW @ 0.85 de-rating
BESS nameplate
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MW @ 0.15 de-rating
BESS storage
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MWh (2-hr duration)
De-rated capacity split — Gas vs BESS
Gas CCGT: BESS:
Annual energy & carbon — 66% utilisation, full capacity (yr 9+)
Annual consumption
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GWh/yr total site
IT energy (÷1.3 PUE)
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GWh/yr IT load
Gross carbon (grid avg)
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kt CO2e/yr · 295 g/kWh
After 80% renewables
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kt CO2e/yr (yr 9+)
Timeline — generation ramp & renewable glide path
Development — yrs 0-3
Planning, permitting & build
Glide path — yrs 3-9
Energisation yr 3; renewables ramp to 80%
Enduring — yrs 9-13+
80% renewable obligation met
Gas CCGT (de-rated MW)
BESS (de-rated MW)
MIC demand ramp (MVA)
80% renewable target
Renewable % (right axis)